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56079990 = 23251973163
BaseRepresentation
bin1101010111101…
…1011001110110
310220112011021200
43111323121312
5103324024430
65321553330
71250446341
oct325733166
9126464250
1056079990
11297237aa
1216945846
13b806935
14763b458
154dcb460
hex357b676

56079990 has 48 divisors (see below), whose sum is σ = 146594448. Its totient is φ = 14874048.

The previous prime is 56079983. The next prime is 56080007. The reversal of 56079990 is 9997065.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16149 + ... + 19311.

It is an arithmetic number, because the mean of its divisors is an integer number (3054051).

Almost surely, 256079990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56079990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73297224).

56079990 is an abundant number, since it is smaller than the sum of its proper divisors (90514458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56079990 is a wasteful number, since it uses less digits than its factorization.

56079990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373 (or 3370 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 56079990 is about 7488.6574230632. The cubic root of 56079990 is about 382.7683110399.

The spelling of 56079990 in words is "fifty-six million, seventy-nine thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 197 394 591 985 1182 1773 1970 2955 3163 3546 5910 6326 8865 9489 15815 17730 18978 28467 31630 47445 56934 94890 142335 284670 623111 1246222 1869333 3115555 3738666 5607999 6231110 9346665 11215998 18693330 28039995 56079990